Arrhythmia or dysrhythmia. An abnormal rhythm or irregularity of the heartbeat. The heartbeat may either be too fast (tachycardia) or too slow (bradicardia). Arrhythmias may cause symptoms such as palpitation or light-headedness, but many have more serious consequences, including sudden death.
Abstract. Benign cardiac arrhythmias are those which cause neither symptoms nor haemodynamic upset and which have no prognostic significance. Such arrhythmias include sinus arrhythmia, isolated atrial ectopic beats and infrequent ventricular ectopic beats.
Definition of benign versus malignant ventricular arrhythmias: targets for treatment.. Benign ventricular arrhythmias occur in patients without known heart disease and do not require treatment.
Symptoms of arrhythmias include palpitations, feeling dizzy, fainting and being short of breath, although having these symptoms does not always mean you have .